Archaeologists dig up a mass grave in a Swedish forest. A special police group is set up to find out the murderers.

A 25 year old body is found in a cave on a small island off the Swedish coast. As it appears to be connected to a family massacre, the team of investigators from 25 years ago return to the island to discover what they've missed the first time. Written by Loek Schiffelers

The year is 1975, and the West German embassy in Stockholm is occupied by German terrorists. It's an attack not only on the embassy, but on Sweden's long-standing pride as a peaceful nation. In the aftermath of the violent occupation, the Swedish Security Police suspects the six terrorists had help from the outside, possibly from a group of Swedish sympathizers. But no leads can be found until fourteen years later. Written by Anonymous

A late summer night in 1990 a young pregnant woman is brutally murdered by being buried in the sand, to slowly become submerged by the tide. 25 years later, the sadistic murder remains unsolved. Olivia Rönning receives the task of studying the case as a cold case exercise at the Police Academy. Olivia becomes almost obsessed with the murder when she discovers that her father previously worked with the investigation. She quickly realizes that she must get a hold of the principal investigator, detective Tom Stilton, but he seems to have disappeared from the face of the Earth.

Series about people escaping their cold winter homeland looking for happiness in sunny Thailand but getting more than they hoped for.